package com.cn.hnust.utils;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.ConnectException;
import java.net.URL;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;




import net.sf.json.JSONObject;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * 
 * 公众平台通用接口工具类
 */
public class WeChatUtil {

	private static Logger log = LoggerFactory.getLogger(WeChatUtil.class);

	public final static String APPID = "wx4e39c4d2417be656";// 第三方用户唯一凭证

	public final static String SECRET = "d2414365c21144dfcb3f62d70a37bbc4";// 第三方用户唯一凭证密钥

	/**
	 * 
	 * 发起https请求并获取结果
	 * 
	 * @param requestUrl
	 *            请求地址
	 * 
	 * @param requestMethod
	 *            请求方式（GET、POST）
	 * 
	 * @param outputStr
	 *            提交的数据
	 * 
	 * @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值)
	 */

	public static JSONObject httpRequest(String requestUrl,
			String requestMethod, String outputStr) {

		JSONObject JsonObj = null;
		StringBuffer buffer = new StringBuffer();

		try {

			// 创建SSLContext对象，并使用指定的信任管理器初始化
			TrustManager[] tm = { new MyX509TrustManager() };

			SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");

			sslContext.init(null, tm, new java.security.SecureRandom());

			// 从上述SSLContext对象中得到SSLSocketFactory对象
			SSLSocketFactory ssf = sslContext.getSocketFactory();

			URL url = new URL(requestUrl);

			HttpsURLConnection httpUrlConn = (HttpsURLConnection) url
					.openConnection();

			httpUrlConn.setSSLSocketFactory(ssf);
			httpUrlConn.setDoOutput(true);
			httpUrlConn.setDoInput(true);
			httpUrlConn.setUseCaches(false);

			// 设置请求方式（GET/POST）
			httpUrlConn.setRequestMethod(requestMethod);
			if ("GET".equalsIgnoreCase(requestMethod)) {
				httpUrlConn.connect();
			}
			// 当有数据需要提交时
			if (null != outputStr) {
				OutputStream outputStream = httpUrlConn.getOutputStream();
				// 注意编码格式，防止中文乱码
				outputStream.write(outputStr.getBytes("UTF-8"));
				outputStream.close();
			}
			// 将返回的输入流转换成字符串
			InputStream inputStream = httpUrlConn.getInputStream();

			InputStreamReader inputStreamReader = new InputStreamReader(
					inputStream, "UTF-8");

			BufferedReader bufferedReader = new BufferedReader(
					inputStreamReader);

			String str = null;

			while ((str = bufferedReader.readLine()) != null) {
				buffer.append(str);
			}

			bufferedReader.close();
			inputStreamReader.close();
			inputStream.close();
			inputStream = null;
			httpUrlConn.disconnect();
			JsonObj = JSONObject.fromObject(buffer.toString());

		} catch (ConnectException ce) {
			log.error("Weixin server connection timed out.");
		} catch (Exception e) {
			log.error("https request error:{}", e);
		}
		return JsonObj;

	}

}
